code: def test_return_estimator_from_json(self):
      est = self.base_learner_origin.return_estimator()
      assert isinstance(est, RandomForestClassifier)
  
file_path: xcessiv/xcessiv/tests/test_models.py
imports: from __future__ import absolute_import, print_function, division, unicode_literals
  import unittest
  from xcessiv import models
  from sklearn.ensemble import RandomForestClassifier
label_desc: Use image node_id 2 for calling the TestReturnEstimator obj's underlying member method code with example usage: obj.test_return_estimator_from_json() without return types